64239650 has 12 divisors (see below), whose sum is σ = 119485842. Its totient is φ = 25695840.

The previous prime is 64239641. The next prime is 64239653. The reversal of 64239650 is 5693246.

It can be written as a sum of positive squares in 3 ways, for example, as 42159049 + 22080601 = 6493^2 + 4699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64239650.

It is not an unprimeable number, because it can be changed into a prime (64239653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642347 + ... + 642446.

Almost surely, 2^64239650 is an apocalyptic number.

64239650 is a deficient number, since it is larger than the sum of its proper divisors (55246192).

64239650 is a wasteful number, since it uses less digits than its factorization.

64239650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284805 (or 1284800 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 64239650 is about 8014.9641296764. The cubic root of 64239650 is about 400.4986489481.

The spelling of 64239650 in words is "sixty-four million, two hundred thirty-nine thousand, six hundred fifty".